It is. This chart is more meant for new people to get an appreciation for the distribution of transactions and how long they take to get confirmed. The notion of TX size is foreign to them. Also, a scatter-plot of TX size vs confirmation time would be boring- it would be a solid straight line from left to right with a couple extra dots higher up for the few big transactions. It wouldn't convey any information since the plots along the line would be so dense that it would appear to be uniform.

It would be nice to also have histograms for the 'with fee' and the 'without fee' transactions (plotted on the same chart) so you could easily compare their expected confirmation times, and see how much time the standard fee inclusion will buy you.

Bump, plus adding a vote for the histogram. Many thanks for providing this service.

They'rethere, in their room.Your mining rig is on fire, yet you're very calm.

Yes, the blockchain has grown too large for ABE (a block explorer) to catch up which I depended on. I've removed links to the project where I can find them on the Wiki and I suppose I should point the domain to a better stats website.